Question

I think of a number and add 6.the result is equal to twice the first number.what is the first number

Answer 1

x = your number

The question can be written as:

x + 6 = 2 x

Subtract x to both sides.

6 = x

x = 6

Check result:

x + 6 = 2 x

6 + 6 = 2 • 6

12 = 12